Lumber-boom



(No Model.)

U. R. NICHOLS;

LUMBER BOOM. v No. 313,608. Patented Mar. 10, 1885.

- WWW V I y MM UNITED ETaTns PATENT @FHCEa UEIAS R. NICHOLS, OF NEW RIVER, TENNESSEE.

LUMBER-BOOM.

SPECIFICATION forming part of Letters Patent No. 313,608, dated March 10, 18815.

Application filed June 30, 1894.

To all whom it may concern.-

Be it known that I URIAS R. N IOHOLS, a citizen of the United States, residing at New River, in the county of Scott and State of Tennessee, have invented certain new and useful Improvements in Lumber-Booms, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, in which the figure shows a plan of a lumber-boom with my improvements attached.

My invention relates to an improvementin lumber-booms designed to catch and retain logs that are drifted down the current of the river; and it consists in a drit't'sheer consisting of a series of logs converging toward each other, and adapted to gather the timber and the commingled driftiee, debris, 8:01, combined with adjustable sheer and with inlets and a pocket, and the means for guiding the floatingtimber into the pocket, as will be hereinafter more fully set forth; and my invention further consists in the novel arrangement and combination of devices, as will be hereinafter more fully set forth, and pointed out in the claims.

To enable others skilled in the art to make and use my invention, I will proceed to describe the eXact manner in which I have carried it out.

In the said drawing,A Arepresent the op posite banks of a river or stream, and A the course of the river.

BO represent the drift-sheer, constructed of a series of logs or timbers coupled together by any suitable means and having their ends up stream, as shown. These ends are connected to the opposite banks or shore by any of the well-known means, while the lower ends are contracted or made to converge toa comparatively-small opening, I), which may extend a suitable distance without changing the diameter of the opening, and into this opening is guided all the debris, floating timber, and whatever material that comes down the river.

The timber constituting the sheer, as well as such other timbers as may be used for bracing or keeping the sheer in its proper position, are suitably connected together and an- (No model.)

chored to the shore by chains or ropes, or the same may be securely held by anchors or weights sunken in the stream.

At a point, (1,11ear where the converging ends of the drit'tsheer B 0 form the mouth or opening b, is pivotally secured an adjustable sheer, D, and secured to its outeror free end by a pivot is a bar, E, having a series of perforations, 6, formed therein, fora purpose hereinafter set forth.

On one of the timbers d, forming apart of the side B of the drift-sheer, is formed perforations, which are adapted to receive pins 6, by

which the bar E and timbers d are connected.

From this arrangement it .will be seen that the opening b can be enlarged or contracted, and the amount of material permitted to pass into the opening is thereby regulated.

Below the adjustable bar E and secured to he lower ends of the logs, to which the said bar is secured, are timbers, which form asuitable bridge, F, at the entrance to an endless pocket, H. into which the assorted logs are guided. Below the bar E and bridge F is arranged another series of bars and bridges, of which I can use any number, which are constructed and arranged in precisely the same manner as the bar E and bridge F, above referred to, and upon these bridges the workmen may stand with pikes and sort out the timber to be used and direct it into the opening h, and thence into the endless pocket for future use. The material not desired is permitted to pass out through a channel and past the various adjustable sheers and thence downstream.

K and L represent braces secured to, the sheer B O in any well-known manner, and upon each of the braces K is secured a vertical post, M, while cords, chains, or other equivalent de vices, after being secured to the braces K near their outer ends, pass over the posts M and across the stream, where they may be secured in a manner similar to that shown in Fig. 1, and the ends of said rope or chains being secured to a suitable capstan, P, secured in a frame, W, enables the operator to increase or diminish the size of the opening I) by drawing the sides of the driftsheer closer together.

Having thus explained my invention, what I claim as new, and desire to secure by Letters Patent, is

l. Alumbenboom havingaconverging driftsheer, B O, the combination of a pivoted adjustable sheer, D, and a bar, E, and the means, as described, for holding the bar in any desired position, substantially as and for the purpose set forth;

2. In a lumber-boom, the combination of the sections B O, the adjustable sheer D, the bar E, the means, substantially as described, for holding said bar in position, and a pocket, H, all arranged to operate substantially as and for the purpose set forth.

3. In combination With thedrift-sheer B and O, the endless pocketsH, provided with inlets h, and suitable bridges over the inlets, substantially as herein set forth.

4. In combination with alumber-boom hav- 2o ing two or more bridges at the inlets to an endless pocket, adjustable drift-sheers and bars-secured to suitable frame-work, substantially as herein set forth.-

5; A lumber-boom, consisting of the sections 2 5' URIAS R. NICHOLS.

Witnesses: I I

F. P. ABBOTT, M. A. FARRELL. 

